我一直在寻找的答案，这个问题，但不依靠一个Exchange服务器上，而是使用IMAP服务器。我不知道这是否超出了问题的范围，但是我发现它搜索“将已发送的邮件消息发送到已发送的文件夹”，这首先是我的问题。
还没有找到一个直接的回答我的任何地方建立了自己的解决方案基于：
我执行的保存方法的一个扩展smtpClient如此，而不是.Send()，我们将使用.SendAndSaveMessageToIMAP()。
public static class SmtpClientExtensions
{
static System.IO.StreamWriter sw = null;
static System.Net.Sockets.TcpClient tcpc = null;
static System.Net.Security.SslStream ssl = null;
static string path;
static int bytes = -1;
static byte[] buffer;
static System.Text.StringBuilder sb = new System.Text.StringBuilder();
static byte[] dummy;
/// <summary>
/// Communication with server
/// </summary>
/// <param name="command">The command beeing sent</param>
private static void SendCommandAndReceiveResponse(string command)
{
try
{
if (command != "")
{
if (tcpc.Connected)
{
dummy = System.Text.Encoding.ASCII.GetBytes(command);
ssl.Write(dummy, 0, dummy.Length);
}
else
{
throw new System.ApplicationException("TCP CONNECTION DISCONNECTED");
}
}
ssl.Flush();
buffer = new byte[2048];
bytes = ssl.Read(buffer, 0, 2048);
sb.Append(System.Text.Encoding.ASCII.GetString(buffer));
sw.WriteLine(sb.ToString());
sb = new System.Text.StringBuilder();
}
catch (System.Exception ex)
{
throw new System.ApplicationException(ex.Message);
}
}
/// <summary>
/// Saving a mail message before beeing sent by the SMTP client
/// </summary>
/// <param name="self">The caller</param>
/// <param name="imapServer">The address of the IMAP server</param>
/// <param name="imapPort">The port of the IMAP server</param>
/// <param name="userName">The username to log on to the IMAP server</param>
/// <param name="password">The password to log on to the IMAP server</param>
/// <param name="sentFolderName">The name of the folder where the message will be saved</param>
/// <param name="mailMessage">The message being saved</param>
public static void SendAndSaveMessageToIMAP(this System.Net.Mail.SmtpClient self, System.Net.Mail.MailMessage mailMessage, string imapServer, int imapPort, string userName, string password, string sentFolderName)
{
try
{
path = System.Environment.CurrentDirectory + "\\emailresponse.txt";
if (System.IO.File.Exists(path))
System.IO.File.Delete(path);
sw = new System.IO.StreamWriter(System.IO.File.Create(path));
tcpc = new System.Net.Sockets.TcpClient(imapServer, imapPort);
ssl = new System.Net.Security.SslStream(tcpc.GetStream());
ssl.AuthenticateAsClient(imapServer);
SendCommandAndReceiveResponse("");
SendCommandAndReceiveResponse(string.Format("$ LOGIN {1} {2} {0}", System.Environment.NewLine, userName, password));
using (var m = mailMessage.RawMessage())
{
m.Position = 0;
var sr = new System.IO.StreamReader(m);
var myStr = sr.ReadToEnd();
SendCommandAndReceiveResponse(string.Format("$ APPEND {1} (\\Seen) {{{2}}}{0}", System.Environment.NewLine, sentFolderName, myStr.Length));
SendCommandAndReceiveResponse(string.Format("{1}{0}", System.Environment.NewLine, myStr));
}
SendCommandAndReceiveResponse(string.Format("$ LOGOUT{0}", System.Environment.NewLine));
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine("error: " + ex.Message);
}
finally
{
if (sw != null)
{
sw.Close();
sw.Dispose();
}
if (ssl != null)
{
ssl.Close();
ssl.Dispose();
}
if (tcpc != null)
{
tcpc.Close();
}
}
self.Send(mailMessage);
}
}
public static class MailMessageExtensions
{
private static readonly System.Reflection.BindingFlags Flags = System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic;
private static readonly System.Type MailWriter = typeof(System.Net.Mail.SmtpClient).Assembly.GetType("System.Net.Mail.MailWriter");
private static readonly System.Reflection.ConstructorInfo MailWriterConstructor = MailWriter.GetConstructor(Flags, null, new[] { typeof(System.IO.Stream) }, null);
private static readonly System.Reflection.MethodInfo CloseMethod = MailWriter.GetMethod("Close", Flags);
private static readonly System.Reflection.MethodInfo SendMethod = typeof(System.Net.Mail.MailMessage).GetMethod("Send", Flags);
/// <summary>
/// A little hack to determine the number of parameters that we
/// need to pass to the SaveMethod.
/// </summary>
private static readonly bool IsRunningInDotNetFourPointFive = SendMethod.GetParameters().Length == 3;
/// <summary>
/// The raw contents of this MailMessage as a MemoryStream.
/// </summary>
/// <param name="self">The caller.</param>
/// <returns>A MemoryStream with the raw contents of this MailMessage.</returns>
public static System.IO.MemoryStream RawMessage(this System.Net.Mail.MailMessage self)
{
var result = new System.IO.MemoryStream();
var mailWriter = MailWriterConstructor.Invoke(new object[] { result });
SendMethod.Invoke(self, Flags, null, IsRunningInDotNetFourPointFive ? new[] { mailWriter, true, true } : new[] { mailWriter, true }, null);
result = new System.IO.MemoryStream(result.ToArray());
CloseMethod.Invoke(mailWriter, Flags, null, new object[] { }, null);
return result;
}
}
所以罗伯特·里德的例子将成为
using (var mailMessage = new MailMessage("[email protected]", "[email protected]", "subject", "body"))
{
//Add an attachment just for the sake of it
Attachment doc = new Attachment(@"filePath");
doc.ContentId = "doc";
mailMessage.Attachments.Add(doc);
var smtpClient = new SmtpClient("SmtpHost")
{
EnableSsl = false,
DeliveryMethod = SmtpDeliveryMethod.Network
};
// Apply credentials
smtpClient.Credentials = new NetworkCredential("smtpUsername", "smtpPassword");
// Send
smtpClient.SendAndSaveMessageToIMAP(mailMessage, "imap.mail.com", 993, "imapUsername", "imapPassword", "SENT");
}
感谢您的回复！这绝对是一个可能的考虑因素，因为它实际上就是我需要的确认... – 2010-03-18 16:51:22
LachlanB下面的Exchange服务答案是真正的答案。这有点破解。 – kenjara 2016-04-07 14:05:03